For four or five days prior to having a glucose tolerance test, a patient omits all foods containing sugar from his diet and eats little of any foods containing carbohydrates, such a procedure will:

Correct Answer: C

Rationale: Low carbohydrate intake depletes glycogen stores, impairing glucose tolerance and causing an exaggerated OGTT response.

Correct Answer: A

Rationale: Essential hypercholesterolemia and myxedema (hypothyroidism) cause hyperlipidemia; pheochromocytoma does not.

Correct Answer: B

Rationale: Amino-corticoids' is not a recognized class; corticosteroids include mineralocorticoids, gluconeogenic, and glucocorticoids.

Correct Answer: C

Rationale: Hereditary spherocytosis leads to cholelithiasis from hemolysis and bilirubin stones.

Correct Answer: D

Rationale: Congenital heart disease with cyanosis causes polycythemia from hypoxia.